Your essay should be inspiring to your reader - your teacher. He should receive a message that your essay is worth reading because there is something to learn from it. Even if it is a plain informative essay, you still have to inject a touch of inspiration into it. Your essay should also teach or educate, in one way or another, even if it is a plain entertaining essay. It could also serve as an eye-opener.

One other thing to think about when it comes to good essay writing is that it is not something that you can do off-the-cuff or quickly. In order to write according to the regulations set forth by your particular course, you will need to take some time and break it up. The last thing you want to do is try to rush writing your final conclusion just to get it finished. You will find that it will not sound as good as if you have a little extra time to work on it.